By measuring a star’s age and chemical makeup, astronomers can determine where a sun originated in the galactic disk before migrating outward. The Sun, it turns out, likely formed about 2,000 light years closer to the Milky Way’s core.
Astronomers have detected a powerful molecular wind being blasted away from a starburst galaxy in the early universe, the earliest example yet of a mechanism thought to prevent galaxies from growing too large too fast.
Supercomputer simulations show star clusters, regardless of size, form in the same way, starting with a dense cloud of interstellar gas and shaped over several million years by gravity, turbulence and radiation pressure
Observations by NASA’s Chandra X-ray Observatory of two five-billion-solar-mass black holes at the cores of two ancient ‘red nugget’ galaxies show they squelched star formation early on while consuming surrounding gas.